EP 0946128 B1 20050525 - IMPROVED POLYVINYLSILOXANE IMPRESSION MATERIAL
Title (en)
IMPROVED POLYVINYLSILOXANE IMPRESSION MATERIAL
Title (de)
POLYVINYLSILOXAN-ABFORMMASSE
Title (fr)
MATERIAU D'IMPRESSION AMELIORE EN POLYVINYLSILOXANE
Publication
Application
Priority
- US 9723095 W 19971211
- US 76713496 A 19961219
Abstract (en)
[origin: WO9826748A2] Improved two component polymerizable polyorganosiloxane compositions are described, particularly for use in making dental impressions, having improved tear strength and wettability. Improved tear strength results from inclusion of a quadri-functional polysiloxane having a vinyl content of 0.16 to 0.24 m-mole/g. Working time is maintained by including sufficient amounts of a retarder composition that delays onset of the vinyl polymerization. Wettability is improved by including a surfactant resulting in a surface contact angle with water at three minutes of less than 50 DEG . The surfactant chosen has an HLB of 8-11, such that the wetting contact angle is achieved within less than two minutes and remains wetting throughout the working time of the impression taking, substantially improving impression quality. A low viscosity impression material is provided and includes a base component and a catalyst component. Both components are siloxane-based materials.
IPC 1-7
IPC 8 full level
A61K 6/90 (2020.01); C08L 83/04 (2006.01)
CPC (source: EP US)
A61K 6/90 (2020.01 - EP US); C08L 83/04 (2013.01 - EP US); C08G 77/12 (2013.01 - EP US); C08G 77/18 (2013.01 - EP US); C08G 77/20 (2013.01 - EP US); C08G 77/44 (2013.01 - EP US); C08G 77/70 (2013.01 - EP US); C08G 77/80 (2013.01 - EP US)
Designated contracting state (EPC)
DE DK ES FR GB IT NL
DOCDB simple family (publication)
WO 9826748 A2 19980625; WO 9826748 A3 19980903; DE 69733361 D1 20050630; DE 69733361 T2 20051117; DK 0946128 T3 20050919; EP 0946128 A2 19991006; EP 0946128 B1 20050525; ES 2241062 T3 20051016; JP 2001506264 A 20010515; SE 521931 C2 20031223; SE 9902323 D0 19990618; SE 9902323 L 19990819; US 5830951 A 19981103
DOCDB simple family (application)
US 9723095 W 19971211; DE 69733361 T 19971211; DK 97952451 T 19971211; EP 97952451 A 19971211; ES 97952451 T 19971211; JP 52788998 A 19971211; SE 9902323 A 19990618; SE 9902323 D 19990618; US 76713496 A 19961219